Terms you'll need to understand:
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This chapter focuses on Virtual LANs (VLANs), which were created by the different switch manufacturers to provide individual broadcast domains. By assigning each port to an individual VLAN, each VLAN becomes its own broadcast domain. In IP networks, each VLAN is considered its own subnet and must be addressed as such. Each VLAN is commonly referred to as a color . When a VLAN is created and ports on a single or multiple switches are assigned to that VLAN, only those ports that are members of the same VLAN will receive broadcasts from any other member of their assigned VLAN; these are called VLAN Ports. VLAN trunks are used to provide a way for data frames belonging to more than one VLAN to travel a single physical link between network devices.
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